FRANCESCO BORROMINI (1599-1667), Italian architect, was born at Bissone in 1599. He was the chief representative of the style known in architecture as " baroque," which marked a fearless and often reckless departure from the traditional laws of the Renaissance, and often obtained originality only at the cost of beauty or wisdom. One of the main opponents of this style was Barocchio (q.v.). Borromini was much employed in the middle of the 17th century at Rome. His principal works are the church of St Agnese in Piazza Navona, the church of La Sapienza in Rome, the church of San Carlino alle Fontane, the church of the Collegio di Propaganda, and the restoration of San Giovanni in Laterano. . He died by his own hand at Rome in 1667. Engravings of his chief compositions are to be found in the posthumous work, Francisci Borromini opus Architectonicum (1727).